Composite injector



WITNEEEESI No. 62I,36'7.

.(MndeL) W. R. PARK 8:. B. T, WILLISTON. COMPOSITE INJECTOR.

(Application filed Jain. 24, 1899.

Patented Mar. 2|, I899 2 Sheets-Sheet 'l.

4 @W WW No. 621,367. Patented Mar. 21, less. w. R. PARK & B. T. WILLISTDN. COMPOSITE INJECTOR.

(Application filed Jan. 24, 1899.)

(Model) 2 Sheets-Sheet 2.

WITNESSES N N T1355 jw g W 5 5% awm I I WW I llNrrnn STATES Brion.

PATENT WILLIAM R. PARK, OF TAUNTON, AND BELVIN T. WILLISTON, OF SOMER- VILLE, MASSACHUSETTS, ASSIGNORS TO THE HANCOCK INSPIRATOR COMPANY, OF BOSTON, MASSACHUSETTS.

COMPOSITE INJECTOR.

SPECIFICATION forming part of Letters Patent No. 621,367, dated March 21, 1899.

- Application filed January 24, 1899- Serial No. 703,302- (ModeL) To aZZ whom it may concern/.-

Be it known that we, WILLIAM R. PARK, a resident of Taunton, county of Bristol, and BELVIN T. WILLIsTON, a resident of Somerville, county of Middlesex, State of Massachusetts, citizens of the United States of America, have invented certain new and useful Improvements in Composite Injectors, of which the following is a specification.

,This invention is an improvement in the mechanism relating to composite injectors wherein two independent valve-actuating levers are employed to control the operation of the several lifting and forcing instruments. It is a simple matter to mount the lever and the lever-frame, the latter consisting of pivoted links in the case of a single injector or inspiratorsuch as, for instance, the machine shown in United States Letters Patent No.

492,944, issued to us on March 7, 1893; but in the case of a composite injectorsuch as, for instance, that shown in United States Letters Patent No. 609,163, issued to us August 16, 1898a dilferent condition arises. When the mode of mounting the valve-lever on a single injector or inspirator is transferred by mere duplication to the composite injector, the several sets of valve-levers and link-frames have to be spread apart, so as not to interfere with each other, and this arrangement necessitates an abnormal proportioning of some parts of the composite injector casing. For instance, in the injector of Patent No. 609,163 the tubes of the smaller set are spread wide apart, the 3 5 steam-Valve being quite remote from the lifter. (See Fig. 5, Patent No. 609,163.) While this distortion from the normal arrangement does not apparently interfere with the working of the machine, yet the necessi- 0 ties of the situation develop an injector-casing which is unusually deep in the body and which contains far more than a desirable weight of metal. This consideration is important, because this class of injectors is de- 5 signed especially for locomotive engines.

Any excess of weight in the injector adds n11- duly to the strains put upon the couplings and supports and exaggerates the effects due to vibration when the engine is in motion.

By the invention herein described the sev eral valve-levers are mounted at the same level and at the same time are reconciled to each others movements, no valve-handle 1nterfering with the independent operation of another. Furthermore, the same symmetrical and firm support is given to each valve-operating handle as is furnished by the doublebar-link frame shown in either of the two aboved-named patents.

Another feature of thisinvention lies in the fact that the entire articulated supporting and operating mechanism of the several sets of valve handles or levers is securely held in operative position by a single master-bolt. Nuts, keys, screws, &c., are dispensed with, and the whole contrivance may be assembled or taken down in a moment. Only a single nut has to be manipulated. This arrangement greatly adds to the strength and simplicity of the device and renders it susceptible of quick repair.

In the drawings hereto annexed, wherein like letters are uniformly employed to designate like parts, Figure 1 shows the operating end of a composite injector; Fig. 2, a plan view of the link-frame and valve-handles, and Fig. 3 the valve-lever frame disconnected and the parts distributed.

On the injector-casing I are cast studs or trunnions T, which are turned to cylindrical form, the two cylinders having one common axis. 'On the trunnions T the main or primary lever-frame is mounted. This primary frame consists of side bars B B, in the ends of which bearings E E are formed, the said bearings being made to fit over the trunnions T. From the inner side of the bar B projects a bearing-stud B The bar B is perforated at H and G, the hole H passing axially through the bearing-stud B The bar B carries a sleeve-shaped extension B opposite the end of which is the hole H. In the end of bar B is the hole G. The holes E, H, and G of the bar B are spaced between centers exactly the same as holes E, H, and G of bar B, so

that when the two side bars are mounted 011 the trunnions T the holes come exactly opposite each other, H registering with H and G with G. The valve-operating lever L is formed of one casting, which carries as an integral part the lateral arm P. The arm P and the opposite fork of lever L are finished off with studs S S, which are turned to fit the holes of G G bars B B.

The secondary lever-frame consists of two side bars I) b, on which are sleeves t t. Holes g g in the ends of the side bars I) b are formed so as to admit the studs 8 s, which are integral parts of the casting which forms the valvelever Z.

The bore of the sleeves t 25 corresponds with the external diameter of the bearing-stud B which has an internal bore adapted to receive the master-bolt M.

The valve-stems are shown at V and The lever-frame is assembled as follows: Connect each valve-lever with its valve-stem. Insert stud S in hole G and place the bearing E on trunnions T. Place the studs 3 8 into holes 9 g, respectively, and slip the two sleeves ti over the bearing-stud b and then place bearing E on its trunnion, at the same time slipping stud S into hole G. Then slip the master-bolt M through hole I-I, sleeve B and hole II and bring up the bolt-head N on bar 13 by screwing nut O on the threaded end of the master-bolt M; The bolt M holds the whole structure firmly together. The studand-socket connections are simple and strong and easy to assemble or disconnect. Each valve-lever has its own independent mounting and is independent of the other. The two valve-stems are on the same level. The

entire composite injector can be compactly and economically proportioned, and a burden of useless metal is removed.

lVhat we claim, and desire to secure by Letters Patent, is

1. In alever-frame for composite injectors,

the combination of a primary lever-frame pivoted on the injector-casing, a secondary lever-frame pivoted on the primary frame, levers pivoted on the primary and secondary lever-frames, respectively, the said levers being provided each with its valve-stem and connections, substantially as described.

2. In a lever-frame for composite injectors, the combination of a primary lever-frame hung on trunnions to the injector-casing, a secondary lever-frame pivoted on the primary frame, levers pivoted on the primary and secondary lever-frames, respectively, and provided each with its valve-stem and connections, and master-bolt, extending from side to side of the primary lever-frame, the said bolt confining the articulated parts of the primary'and secondary lever-frames in operative relationship, substantially as described.

3. In a lever-frame for composite injectors, the combination of a primary lever-frame consisting of two side bars pivoted to the illjector-casing, a valve-handle pivoted on a rocking shaft between said side bars, the

rocking shaft and side bars being articulated by stud-and-socket connections, a secondary lever-frame pivoted upon a master-bolt, the said bolt passing from side to side of the primary lever-frame and holding the side bars thereof in operative relationship with the articulated parts, substantially as described.

Signed by us, at Boston, this 2d day of Jan 11- ary, A. D. 1899.

WVILLIAM R. PARK. BELVIN T. \VILLISTON. \Vitnesses:

E. F. GROLL, S. G. O. SWANsoN. 

